<!DOCTYPE html>
<html lang="zh-cn">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app">
          <p>{{ jump(msg) }}</p>
    </div>
    <script src="./vue.js"></script>
    <script>
      new Vue({
        el: '#app',
        data () {
          return {
            msg: '我的兴趣是：'
          }
        },
        methods: {
            jump (val) {
                console.log(val)
                // return 'hello'
                return val + '跳'
            }
        }
      })
    </script>
  </body>
</html>